Machines



(No Model.)

l J. W. GOREY.

NEEDLE CLAMP FOR SEWING MACHINES.

Patented June l0, 1884.

mms,

NITED STATES PATENT EEICE.

JASPER W. COREY, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SIGWALT SEWING MACHINE COMPANY, OE SAME PLACE.

NEEDLE-CLAMP FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 300,050, dated June 10, 1884:.

Application filed June 7, 1883. (No model.)

To' all whom it may concern.-

Be it known that I, JAsPER W. COREY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Needle-Clamps for Sewing- Machines, of which the following is a specication.

My invention relates to a new andimproved needle-clamp, in which I secure a more perfeet-and cheap construction than has been obtained heretofore.

I have illustrated my invention by the aceompanying drawings, forming a part of this specification, in which- Figure l is a perspective View of the clamp attached to the needlebar with the needle in its place. Eig. 2 is a section of Fig. l on lines 2 2 2. Fig. 3 shows a section on line-3 3 of Eig. 2. Fig. 4 shows the head of the clamp prepared to receive my improved pin. Fig. 5 shows the pin used by me in my invention.

Lilie letters refer to like parts throughout the several views.

A is the needle-bar. cis the groove into. which the needle lits on said bar. a is the hole in the needlebar,into which myimproved pin F enters. B is the needle; C, the wingnut, by mea-ns of which the needle is clamped in its proper position.

Head of non D. derneath the head d, through which the needle is placed. E E are the grooves at right is my improved pin, composed of a piece of wire bent into the proper form, preferably at right angles.

The purpose of my invention is to furnish V D is the bolt operated 'bv or controlled by wing-nut C. d is the d is the hole in bolt D unan economical method of attaching a threadguide to the head of the needle-clamp, which thread-guide shall also serve as a guide to the head d of bolt D, in order to place the same in proper position to hold the needle; and I obtain this object in the following manner: The pin which I use in order to accomplish this result is composed of a single piece of wire bent into or nearly into the form and shape shown in Fig. 5-viz., at right angles. The pin,when thus formed, is driven or forced into the hole e in the groove E in the head of the bolt of the needlevclalnp, and allowed to project beyond 'or through said bolt in the manner shown in Fig. 3. The hole a is also drilled into the needle-bar, in which hole that portion of the pin i projecting beyond the head of the bolt of the needleclamp, as describefhts or enters loosely when the head of the bolt of the needle-clamp is placed in its proper position to have t-he needle placed through the hole d in said bolt underneath the head d in the groove in the needle-bar, in order to be clamped into its place forusc. By these means the head of the bolt of the needle-clamp is prevented from rotating, and is held in such position thatthe needle will pass through the said hole d in the bolt, which' is prepared to receive the needle, and enter or fit into the groove on the needle-bar.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

In a necdleclamp for sewing-machines, the combination of a needle-bar having groove a and hole a', bolt D, having grooves E, e, and E', and hole d', formed in the head d, nut C, and an angular pin formed in one piece passing through holes d and c and extending into groove e, substantially as described.

JASPER W. COREY.

Witnesses:

FREDERICK C. GOODWIN, CEAELEs T. BROWN. 

